According to the organizers, here is a list of street closures and approximate times. Organizers say that final decisions about when to open and close streets will be made by police officers at various intersections. They say there also may be "rolling stops," which means an officer may allow vehicles to proceed when there is a gap between runners.

From this point on, at the intersection of Eastern Avenue and Linwood Avenue, the half-marathon course dovetails with the full marathon course and has the same closing and opening times.

Street closures for 2012 5K:

The entire course is closed from 8:00 a.m. to 9:15 a.m.

The 5K starts near the intersection of Paca Street and Camden Street. Runners go from that intersection up Paca Street to Martin Luther King Jr. Boulevard, along McCulloh Street from Martin Luther King Jr. Boulevard to Preston Street, along Preston Street from McCulloh Street to Howard Street and then back along Preston Street to Eutaw Street, along Eutaw Street from McCulloh Street to the finish line south of Pratt Street near Camden Yards. The route crosses Martin Luther King Jr. Boulevard, and portions of it will be closed to allow runners to cross.